<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8" content="text/html;charset=utf-8"/>
    <meta http-equiv="X-UA-Compatible" content="IE=edge"/>
    <meta name="viewport" content="width=device-width,initial-scale=1"/>
    <link th:href="@{/css/bootstrap.min.css}" rel="stylesheet" />
    <link th:href="@{/css/bootstrap-theme.min.css}" rel="stylesheet" />
    <title>Title</title>
</head>
<body>
    <div class="panel panel-primary">
        <div class="panel-heading">
            <h3 class="panel-title">404</h3>
        </div>

    </div>

</body>
</html>